Triple stratification impacts on an inclined hydromagnetic bioconvective flow of micropolar nanofluid with exponential space-based heat generation

Abstract

The present work aims to analyze the effects of magnetohydrodynamics, heat and mass transfer, and gyrotactic microorganism behavior on the bioconvective micropolar nanofluid flow subject to triple stratifications and Cattaneo–Christov double diffusion over a stretched surface. The dimensional system of differential equations has been simplified to dimensionless with suitable non-dimensional quantities and suitable similarity transformations. An efficient numerical technique bvp4c through MATLAB has been implemented to devise the solution of the non-dimensionalized system of governing equations. The significant outcomes of the current analysis are that the amplification of magnetic parameter intensifies the flow velocity and shows the reverse effect for the fluid temperature. The enhancement of micropolar parameter upgrades microrotation, while it exhibits opposite effect for the fluid temperature and nanoparticle concentration. Microorganism concentration peters out with a rise in Peclet number. Gyrotactic microorganism thermal stratification augmentation leads to the diminution of velocity and thermal boundary layer thickness. When gyrotactic microorganism concentration difference parameter rises from 0.1 to 0.8, skin friction whittles down by 12.5%, and wall motile microorganism number ameliorates by 50%.